phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb_1/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('81575bffe81a2e3fe4cc0268a0262907', -1, 1498726230, 1498726230, '369efa27', 13, 0)

Line : 158
File : /forum/includes/sessions.php